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Space-time modulated codes for memory channels: capacity and information rates, zero-forcing decision feedback equalizer

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3 Author(s)
Xia, Xiang-Gen ; Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE, USA ; Genyuan Wang ; Pingyi Fan

Modulated codes (MC) are error correction codes (ECC) defined on the complex field. In this paper, we study space-time MC for memory channels. Similar to MC for single antenna systems, the space-time MC can also be naturally combined with a multiple antenna system with ISI. We derive some lower bounds on the capacities C and the information rates Ii.i.d. of the MC coded systems. As a property of space-time MC, it is shown that, for an N transmit and N receive antenna channel with memory and AWGN, there exist MC with arbitrary rates r, 0<r<1, such that the MC coded systems have larger information rates Ii.i.d than the original system does at relatively low channel SNR. In this paper, we also propose an MC coded zero-forcing decision feedback equalizer (ZF-DFE)

Published in:

Sensor Array and Multichannel Signal Processing Workshop. 2000. Proceedings of the 2000 IEEE

Date of Conference:

2000